Delta DVP-ES2/EX2/SS2/SA2/SX2/SE manual Function Description, Protocol, Setting, Sending, Request

3. Instruction Set

Flag	Function	Action
	COM3 data receiving error. M1319 will be set ON when errors occur	System
M1319		sets,
	and the error code will be stored in D1252	user
		resets

Special register	Function
	Delay time of data response when PLC is SLAVE in COM2, COM3
D1038	RS-485 communication, Range: 0~10,000. (unit: 0.1ms).
	By using EASY PLC LINK in COM2, D1038 can be set to send next
	communication data with delay. (unit: one scan cycle)
D1109	COM3 (RS-485) communication protocol. Refer to the following table in
	point 4 for protocol setting.
	The specific end word to be detected for RS instruction to execute an
D1169	interruption request (I160) on COM3 (RS-485).
	Supported communication instructions: RS
	COM3 (RS-485) Communication time-out setting (ms). If users set up
	time-out value in D1252 and the data receiving time exceeds the
D1252	time-out value, M1319 will be set ON and the error code K1 will be
	stored in D1253. M1319 has to be reset manually when time-out status
	is cleared.
D1253	COM3 (RS-485) communication error code
D1255	COM3 (RS-485) PLC communication address when PLC is Slave.

4.Corresponding table between COM ports and communication settings/status.

	COM1	COM2	COM3	Function Description
	M1138	M1120	M1136	Retain communication setting
Protocol	M1139	M1143	M1320	ASCII/RTU mode selection
setting
	D1036	D1120	D1109	Communication protocol
	D1121	D1121	D1255	PLC communication address
Sending	-	M1161	-	8/16 bit mode selection
request
	-	M1121	-	Indicate transmission status
	M1312	M1122	M1316	Sending request
	-	M1126	-	Set STX/ETX as user/system defined. (RS)
	-	M1130	-	Set STX/ETX as user/system defined. (RS)
	-	D1124	-	Definition of STX (RS)

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